About the Authors

Kiwan Kim

Affiliation Department of Life Science, Sogang University, Seoul, Korea

Najung Kim

Affiliation Department of Life Science, Sogang University, Seoul, Korea

Gap Ryol Lee

grlee@sogang.ac.kr

Affiliation Department of Life Science, Sogang University, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KK GRL. Performed the experiments: KK NJK. Analyzed the data: KK GRL. Wrote the paper: KK GRL.